Debt - Schedule of Outstanding Indebtedness (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended	12 Months Ended
	Feb. 03, 2025	Jun. 30, 2026	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument
Weighted average interest rate		4.454%	4.454%
Principal Amount		$ 17,218,422	$ 17,218,422
Carrying Value		$ 16,931,155	$ 16,931,155	$ 16,773,241
Secured Overnight Financing Rate (SOFR)
Debt Instrument
Basis spread on variable rate (percent)	1.00%
Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument
Basis spread on variable rate (percent)	1.00%
Senior Unsecured Notes
Debt Instrument
Weighted average interest rate		4.60%	4.60%	4.464%
Principal Amount				$ 17,092,453
Carrying Value				$ 16,773,241
Senior Unsecured Notes | MGM Grand/Mandalay Bay CMBS Debt
Debt Instrument
Interest rate, stated percentage		3.558%	3.558%	3.558%
Principal Amount		$ 3,000,000	$ 3,000,000	$ 3,000,000
Carrying Value		$ 2,840,986	$ 2,840,986	$ 2,827,515
Senior Unsecured Notes | 4.500% Notes
Debt Instrument
Interest rate, stated percentage		4.50%	4.50%	4.50%
Principal Amount		$ 500,000	$ 500,000	$ 500,000
Carrying Value		$ 499,147	$ 499,147	$ 496,596
Senior Unsecured Notes | 4.250% Notes
Debt Instrument
Interest rate, stated percentage		4.25%	4.25%	4.25%
Principal Amount		$ 1,250,000	$ 1,250,000	$ 1,250,000
Carrying Value		$ 1,248,811	$ 1,248,811	$ 1,247,385
Senior Unsecured Notes | 5.750% Notes
Debt Instrument
Interest rate, stated percentage		5.75%	5.75%	5.75%
Principal Amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 751,282	$ 751,282	$ 752,382
Senior Unsecured Notes | 3.750% Notes
Debt Instrument
Interest rate, stated percentage		3.75%	3.75%	3.75%
Principal Amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 748,952	$ 748,952	$ 748,114
Senior Unsecured Notes | 4.500% Notes
Debt Instrument
Interest rate, stated percentage		4.50%	4.50%	4.50%
Principal Amount		$ 350,000	$ 350,000	$ 350,000
Carrying Value		$ 346,035	$ 346,035	$ 344,756
Senior Unsecured Notes | 4.750% Notes
Debt Instrument
Interest rate, stated percentage		4.75%	4.75%	4.75%
Hedge adjusted interest rate			4.516%	4.516%
Principal Amount		$ 1,250,000	$ 1,250,000	$ 1,250,000
Carrying Value		$ 1,245,894	$ 1,245,894	$ 1,244,632
Senior Unsecured Notes | 4.750% Notes
Debt Instrument
Interest rate, stated percentage		4.75%	4.75%	4.75%
Principal Amount		$ 400,000	$ 400,000	$ 400,000
Carrying Value		$ 397,674	$ 397,674	$ 397,012
Senior Unsecured Notes | 3.875% Notes
Debt Instrument
Interest rate, stated percentage		3.875%	3.875%	3.875%
Principal Amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 719,560	$ 719,560	$ 713,898
Senior Unsecured Notes | 4.625% Notes
Debt Instrument
Interest rate, stated percentage		4.625%	4.625%	4.625%
Principal Amount		$ 1,000,000	$ 1,000,000	$ 1,000,000
Carrying Value		$ 994,532	$ 994,532	$ 993,732
Senior Unsecured Notes | 4.950% Notes
Debt Instrument
Interest rate, stated percentage		4.95%	4.95%	4.95%
Hedge adjusted interest rate			4.541%	4.541%
Principal Amount		$ 1,000,000	$ 1,000,000	$ 1,000,000
Carrying Value		$ 993,684	$ 993,684	$ 992,815
Senior Unsecured Notes | 4.125% Notes
Debt Instrument
Interest rate, stated percentage		4.125%	4.125%	4.125%
Principal Amount		$ 1,000,000	$ 1,000,000	$ 1,000,000
Carrying Value		$ 993,847	$ 993,847	$ 993,101
Senior Unsecured Notes | 5.125% Notes
Debt Instrument
Interest rate, stated percentage		5.125%	5.125%	5.125%
Hedge adjusted interest rate			4.969%	4.969%
Principal Amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 742,523	$ 742,523	$ 741,828
Senior Unsecured Notes | 5.125% Notes
Debt Instrument
Interest rate, stated percentage		5.125%	5.125%	5.125%
Hedge adjusted interest rate			3.98%	3.98%
Principal Amount		$ 1,500,000	$ 1,500,000	$ 1,500,000
Carrying Value		$ 1,487,941	$ 1,487,941	$ 1,486,918
Senior Unsecured Notes | 5.750% Notes
Debt Instrument
Interest rate, stated percentage		5.75%	5.75%	5.75%
Hedge adjusted interest rate			5.689%	5.689%
Principal Amount		$ 550,000	$ 550,000	$ 550,000
Carrying Value		$ 542,441	$ 542,441	$ 541,956
Senior Unsecured Notes | 5.625% Notes
Debt Instrument
Interest rate, stated percentage		5.625%	5.625%	5.625%
Hedge adjusted interest rate			5.601%	5.601%
Principal Amount		$ 900,000	$ 900,000	$ 900,000
Carrying Value		$ 886,192	$ 886,192	$ 885,409
Senior Unsecured Notes | 5.625% Notes
Debt Instrument
Interest rate, stated percentage		5.625%	5.625%	5.625%
Principal Amount		$ 750,000	$ 750,000	$ 750,000
Carrying Value		$ 737,089	$ 737,089	$ 736,842
Senior Unsecured Notes | 6.125% Notes
Debt Instrument
Interest rate, stated percentage		6.125%	6.125%	6.125%
Principal Amount		$ 500,000	$ 500,000	$ 500,000
Carrying Value		$ 486,143	$ 486,143	485,897
Revolving Credit Facility
Debt Instrument
Commitment fee percentage		0.20%	0.20%
Revolving Credit Facility | Minimum
Debt Instrument
Basis spread on variable rate (percent)			0.70%
Commitment fee percentage			0.10%
Revolving Credit Facility | Maximum
Debt Instrument
Basis spread on variable rate (percent)			1.40%
Commitment fee percentage			0.30%
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument
Basis spread on variable rate (percent)	0.70%
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument
Basis spread on variable rate (percent)	1.40%
USD | Revolving Credit Facility
Debt Instrument
Principal Amount				0
Carrying Value				$ 0
USD | Revolving Credit Facility | Secured Overnight Financing Rate (SOFR)
Debt Instrument
Basis spread on variable rate (percent)				0.85%
USD | Revolving Credit Facility | Senior Unsecured Notes
Debt Instrument
Principal Amount		$ 0	$ 0
Carrying Value		0	$ 0
USD | Revolving Credit Facility | Senior Unsecured Notes | Secured Overnight Financing Rate (SOFR)
Debt Instrument
Basis spread on variable rate (percent)			0.85%
CAD | Revolving Credit Facility
Debt Instrument
Principal Amount				$ 120,219
Carrying Value				$ 120,219
CAD | Revolving Credit Facility | Canadian Overnight Repo Rate Average (CORRA)
Debt Instrument
Basis spread on variable rate (percent)				0.85%
CAD | Revolving Credit Facility | Senior Unsecured Notes
Debt Instrument
Principal Amount		246,540	$ 246,540
Carrying Value		246,540	$ 246,540
CAD | Revolving Credit Facility | Senior Unsecured Notes | Canadian Overnight Repo Rate Average (CORRA)
Debt Instrument
Basis spread on variable rate (percent)			0.85%
GBP | Revolving Credit Facility
Debt Instrument
Principal Amount				$ 22,234
Carrying Value				$ 22,234
GBP | Revolving Credit Facility | Sterling Overnight Index Average (SONIA)
Debt Instrument
Basis spread on variable rate (percent)				0.85%
GBP | Revolving Credit Facility | Senior Unsecured Notes
Debt Instrument
Principal Amount		21,882	$ 21,882
Carrying Value		$ 21,882	$ 21,882
GBP | Revolving Credit Facility | Senior Unsecured Notes | Sterling Overnight Index Average (SONIA)
Debt Instrument
Basis spread on variable rate (percent)			0.85%